IBM 15” Service Manual
39
9. White-Balance, Luminance adjustment
Approximately 30 minutes should be allowed for warm up before proceeding
white balance adjustment.
Before started adjust white balance ,please setting the Chroma-7120 MEM.
channel 9 to 6500 color, MEM. Channel10to 7200 color, and MEM. channel 11 to
9300 color ( our 9300 parameter is x = 283 ±10, y = 297 ±10, Y = 190 ±10 cd/m
2
and 6500 parameter is x = 313 ±10, y = 329 ±10, Y = 200 ±10 cd/m
2 ,
7200 parameter
is x = 303 ±10, y = 319 ±10, Y = 200 ±10 cd/m
2
)
How to setting MEM.channel you can reference to chroma 7120 user guide or simple
use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the TEXT
description Following is the procedure to do white-balance adjust
Press MENU button during 2 seconds along with press Power button will activate the
factory mode, then MCU will do AUTO LEVEL automatically. Meanwhile press MENU
the OSD screen will located at left top of panel.
1、Bias adjustment :
set the contrast
to 50.
adjust the Brightness to 50.
2、Gain adjustment :
Move cursor to “-F-” and press MENU key
A、adjust 6500 color-temperature
1、Switch the chroma-7120 to RGB-mode (with press “MODE” button )
2、switch the MEM.channel to Channel9 ( with up or down arrow on chroma 7120 )
3、The lcd-indicator on chroma 7120 will show x = 313 ±10, y = 329 ±10,
Y = 200 ±5 cd/m
2
4、Adjust the RED of color1 on factory window until chroma 7120 indicator reached
the value R=100
5、adjust the GREEN of color1 on factory, until chroma 7120 indicator reached G=100
6、adjust the BLUE of color1 on factory, until chroma 7120 indicator reached B=100
7、repeat above procedure ( item 5,6,7) until chroma 7120 RGB value meet the
tolerance =100±2
B、adjust 7200 color-temperature
1、Switch the chroma-7120 to RGB-mode (with press “MODE” button )
2、switch the MEM. channel to Channel10 ( with up or down arrow on chroma 7120 )
3、The lcd-indicator on chroma 7120 will show x = 303 ±10, y = 319 ±10,
Y = 200 ±5 cd/m
2
http://www.wjel.net
To Next Page
Loading...
Need help?
General